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Bromocyclopentane

Product Name
Bromocyclopentane
CAS No.
137-43-9
Chemical Name
Bromocyclopentane
Synonyms
CYCLOPENTYL BROMIDE;Bromocylopentane;bromo-cyclopentan;BROMOCYCLOPENTANE;AKOS BBS-00004279;1-Bromocyclopentane;Cyclopentane,bromo-;Bromopentyl bromide;Cyclopentane Bromide;Bromocyclopentane>
CBNumber
CB8853084
Molecular Formula
C5H9Br
Formula Weight
149.03
MOL File
137-43-9.mol
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Bromocyclopentane Property

Boiling point:
137-139 °C (lit.)
Density 
1.39 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.4881(lit.)
Flash point:
95 °F
storage temp. 
Store at R.T.
solubility 
Chloroform, Ethyl Acetate (Slightly)
form 
Liquid
Specific Gravity
1.39
color 
Clear yellow to light brown
Water Solubility 
Immiscible with water.
BRN 
1209256
Stability:
Stable. Flammable. Incompatible with strong oxidizing agents, strong bases.
InChIKey
BRTFVKHPEHKBQF-UHFFFAOYSA-N
LogP
2.745 (est)
CAS DataBase Reference
137-43-9(CAS DataBase Reference)
NIST Chemistry Reference
Cyclopentane, bromo-(137-43-9)
EPA Substance Registry System
Cyclopentane, bromo- (137-43-9)
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Safety

Risk Statements 
10
Safety Statements 
23-24/25-16
RIDADR 
UN 1993 3/PG 3
WGK Germany 
3
8
TSCA 
Yes
HazardClass 
3
PackingGroup 
III
HS Code 
29035990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H226Flammable liquid and vapour

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P403+P235Store in a well-ventilated place. Keep cool.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
C115207
Product name
Bromocyclopentane
Purity
≥98%
Packaging
25g
Price
$49.7
Updated
2024/03/01
Sigma-Aldrich
Product number
C115207
Product name
Bromocyclopentane
Purity
≥98%
Packaging
100g
Price
$55.9
Updated
2024/03/01
TCI Chemical
Product number
B1006
Product name
Bromocyclopentane
Purity
>98.0%(GC)
Packaging
25g
Price
$43
Updated
2024/03/01
TCI Chemical
Product number
B1006
Product name
Bromocyclopentane
Purity
>98.0%(GC)
Packaging
100g
Price
$107
Updated
2024/03/01
Alfa Aesar
Product number
A15455
Product name
Bromocyclopentane, 98+%
Packaging
100g
Price
$44.65
Updated
2024/03/01
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Bromocyclopentane Chemical Properties,Usage,Production

Chemical Properties

Bromocyclopentane is a colorless to light yellow liquid at standard temperature and pressure.It has an aroma similar to camphor. It turns brown after a long time. Soluble in ethanol, ether, insoluble in water. Halocyclopentanes can be prepared by reacting the corresponding alcohols with thionyl halides, phosphorus trihalides or hydrohalic acids.

Uses

Bromocyclopentane is a precursor used in the preparation of cyclopentene and cyclopentanol. It is a fatty bromide, which is used as a solvent. It is used as an intermediate for the preparation of surfactant and pharmaceuticals and other organic compounds. It is also used in the production of the medicine cyclopentathiazide.

Preparation

Bromocyclopentane is synthesized by bromination of cyclopentanol: cyclopentanol is mixed with hydrobromic acid and heated to about 170°C refluxed for 6-8h. Then distilled with water steam, the oil layer is washed with 5% sodium carbonate, then dried, filtered, fractionated and collected 136-139°C fraction is the finished product. Another method is by the reaction of cyclopentanol and phosphorus tribromide: the cyclopentanol is cooled to 0 ℃, add the newly evaporated phosphorus tribromide drop by drop, add it all at 0-5 ℃, stir for 2h, and leave it at room temperature overnight. Add water and stratify, take the oil layer water distillation. Distillate stratification, the oil layer was washed with 10% sodium bicarbonate solution, dried with anhydrous calcium chloride, filtration, filtrate distillation, collect 134-141 ℃ fraction that is bromocyclopentane.

Reactions

Bromocyclopentane is reacted with magnesium turnings in dry tetrahydrofuran making cyclopentyl Grignard reagent, a main precursor in the synthesis of Ketamine.
Bromocyclopentane (22.0 g, 0.15 mol) was added to a soln of NaNO2 (18 g, 0.26 mol) in dry DMSO (100 mL) at 15°C and the mixture was stirred at this temperature for 3 h. The mixture was poured into ice water (250 mL) and extracted with petroleum ether (bp 35-37°C; 4 × 50 mL). The combined organic extracts were washed with H2O (4× 50 mL), dried (MgSO4), and concentrated under reduced pressure. The residue was distilled to give Nitrocyclopentane; yield: 9.9 g (58%); bp 62°C/8 Torr; nD/20 1.4538.

Synthesis of Nitrocyclopentane

Synthesis Reference(s)

The Journal of Organic Chemistry, 54, p. 1463, 1989 DOI: 10.1021/jo00267a047

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Bromocyclopentane Suppliers

Yikang Chemical(Hubei)Co., LTD
Tel
027-18971353-902 18971353902
Email
2242508613@qq.com
Country
China
ProdList
7871
Advantage
58
Huaian yishu technology co.,ltd
Tel
0517-85883738; 13852390259
Fax
0517-85883738
Email
sales@yishuchem.com
Country
China
ProdList
64
Advantage
58
Hubei coward Chemical Co., Ltd
Tel
13125172151; 13125172151
Email
3508116617@qq.com
Country
China
ProdList
4992
Advantage
58
Wuhan xinyangruihe Chemical Technology Co., Ltd.
Tel
153-07155313 15307155313
Fax
QQ:2274366233
Email
2274366233@qq.com
Country
China
ProdList
4990
Advantage
58
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Shanghai Gonghe Chemical Co., Ltd
Tel
+86-21-56733000
Fax
+86-21-52927310
Email
sales@gonghechem.com
Country
China
ProdList
11
Advantage
65
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44689
Advantage
61
Shijiazhuang Sdyano Fine Chemical Co., Ltd.
Tel
0311-89250318 031166536426
Fax
4000311741
Email
master@sjzsdyn.com
Country
China
ProdList
2963
Advantage
65
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View Lastest Price from Bromocyclopentane manufacturers

Hebei Chuanghai Biotechnology Co,.LTD
Product
Bromocyclopentane 137-43-9
Price
US $9.00/KG
Min. Order
1KG
Purity
99.%
Supply Ability
10 ton
Release date
2024-08-08
Hebei Weibang Biotechnology Co., Ltd
Product
Bromocyclopentane 137-43-9
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100 mt
Release date
2021-08-17
Henan Fengda Chemical Co., Ltd
Product
Bromocyclopentane 137-43-9
Price
US $100.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-25

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